/////////////////////////////////////////////////////////////////////////////
// 2023 -
//open source under Apache License Version 2.0
/////////////////////////////////////////////////////////////////////////////
//  Modifications by Kumo Inc.
// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//


#pragma once
#include <kmhdfs/client/byte_buffer.h>
#include <kmhdfs/client/galois_field.h>

#include <iostream>
#include <memory>
#include <string>
#include <vector>

namespace Hdfs {
namespace Internal {

class RSUtil {
public:

    static void encodeData(const std::vector<int8_t> & gfTables,
                           const std::vector<std::shared_ptr<ByteBuffer>> & inputs,
                           const std::vector<std::shared_ptr<ByteBuffer>> & outputs);

    static void initTables(int k, int rows, const std::vector<int8_t> & codingMatrix,
                           int matrixOffset, std::vector<int8_t> & gfTables);

    static void genCauchyMatrix(std::vector<int8_t> & a, int m, int k);

    static std::shared_ptr<GaloisField> getGF() {
        return GaloisField::getInstance();
    }
};

}
}

